package controller;

import java.io.IOException;
import java.sql.SQLException;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import model.Curso;
import model.Disciplina;

public class PesquisarDisciplinaController extends HttpServlet {

    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
     * methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");

        try {
            int filtro = Integer.parseInt(request.getParameter("filtro"));
            request.setAttribute("cursos", Curso.obterCursos());

            if (filtro == 1) {
                int curso = Integer.parseInt(request.getParameter("curso"));
                String nomeDisciplina = request.getParameter("disciplina");
                if ((curso == 0) && (nomeDisciplina == null || nomeDisciplina.equals(""))) {
                    request.setAttribute("disciplinas", Disciplina.obterDisciplinas());
                } else {
                    if (curso != 0 && !nomeDisciplina.equals("")) {
                        request.setAttribute("disciplinas", Disciplina.obterDisciplinasPorCursoENome(curso, nomeDisciplina));
                        request.setAttribute("cursoFiltro", curso);
                        request.setAttribute("nomeFiltro", nomeDisciplina);
                    } else if (curso != 0) {
                        request.setAttribute("disciplinas", Disciplina.obterDisciplinasPorCurso(curso));
                        request.setAttribute("cursoFiltro", curso);
                    } else if (!nomeDisciplina.equals("")) {
                        request.setAttribute("disciplinas", Disciplina.obterDisciplinasPorNome(nomeDisciplina));
                        request.setAttribute("nomeFiltro", nomeDisciplina);
                    }
                }
            } else {
                request.setAttribute("disciplinas", Disciplina.obterDisciplinas());
            }

            RequestDispatcher view = request.getRequestDispatcher("/pesquisarDisciplina.jsp");
            view.forward(request, response);

        } catch (ClassNotFoundException ex) {
            ex.printStackTrace();
        } catch (SQLException ex) {
            ex.printStackTrace();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
